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<p>If you get an exception like this</p>

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<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">
java.lang.NoClassDefFoundError - org/springframework/core/io/Resource
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<h3 id="NoClassDefFoundError-org.springframework.core.io.Resource-Cause">Cause</h3>

<p>You were probably trying to use the <a shape="rect" href="xml-configuration.html">XML Configuration</a> mechanism, which uses Spring, but without having the Spring jar on your classpath.</p>

<h3 id="NoClassDefFoundError-org.springframework.core.io.Resource-Solution">Solution</h3>

<p>Add the Spring jar to your classpath.</p></div>